100099999998 has 216 divisors, whose sum is σ = 243856102464. Its totient is φ = 29638425600.

The previous prime is 100099999997. The next prime is 100100000003. The reversal of 100099999998 is 899999990001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100099999997) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 356227618 + ... + 356227898.

Almost surely, 2^100099999998 is an apocalyptic number.

100099999998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100099999998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121928051232).

100099999998 is an abundant number, since it is smaller than the sum of its proper divisors (143756102466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100099999998 is a wasteful number, since it uses less digits than its factorization.

100099999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 38263752, while the sum is 72.

The spelling of 100099999998 in words is "one hundred billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".